Endless track



F. B. SAPPQ ENDLESS TRACK.,

APPLICATION FILED Nov. 9, 191s;

Patented Apr. 4; 1922;

2 swears-sues? 1.

Ira 622501:

WZZ'IL e/ici I a J Z. jiajdfi I K v a? a I 5 a UNITED STATES.

PATENT OFFICE,

' morn.- BURSON sm or en'nniv MOUNTAIN, IOWA.

' I ENDLESS TRACK. f

" T all euhom it may concern.

zen of the United States,"and. a resident-of the city'of Green Mountain, county of Marshall, and State of Iowa, have invented oer tain-new anduseful Improvements in Endless Tracks, of which-the followinggis a specification. I I I -My invention relates to lmprovements 1n endless track, and has for its object thep-rovision' ofian improved construction o-f-this character which is capable of adjustments to take up wear and which will not clog with mud, orthelike.' l 1 Other objects will appear herelnafter.

The invention consistsinthe combinations and arrangements of parts hereinafter described and elaimed .1 v The invention will be best understood by reference to the accompanying drawings forming apart of this specification, and-. 111 whi0h, r

i 'of the same gFig. 1-,'is a side view of ai portionofan endless track embod ing the invention, "Fig-2,2111 enlarged section, I Fig.:3','-a top Fi zQ, and llig; 4, a section Fig. 2.

'taken on line 4-4 of The preferred 1 form of construction, as

illustrated in the drawings, comprises an endless track made up of a plurality of bearing or tread members pivotally linked together to form an endless tread. Each of these bearing members is made'up of sheet metal, stamped and bent'to form a central elevated portion 5 and depressed side portions 6 provided with a transverse spur or prong '1 extending transversely across the forward end thereof and adapted to imbed itself in the ground to furnish traction, as will be readily understood. Each of the bearing members is also bent at its forward end to form bearings 8 extending across the top or outer portion thereof and arranged at the sides of the lower portion thereof to embrace sleeves 9 loosely mounted on a trans verse pivot pin 10 and held thereon by cotter pins 11, as indicated. he lower sides of the bearings 8 are extended rearwardly at 12 and are secured to the under sides of the portions 6 by means of rivets 13, the extreme rearward ends thereof being formed into segmental hearing portions i l adapted to usual manner, as will SldQ'VlW of a portion shown partially'in longitudinal plan View corresponding with 'ingaf rom the spirit -ofthef therefore, do not wish to be limited'to the Specification of Letters Patent. Patented Apr-.4, 1922. Annlicati on filed NoveinberB, 1918. Serial No. 261,809.

' embrace and ride upon the corresponding' Be itjknown that I, F- LDYDBQSAPP, a c1t1- bearing portions 8 of the next hearing member to the rear; Likewise, the upper rear portions of each bearing member are formed into a bearing 15 adapted to contact with and ride upon the upper portion of the corresponding bearing 8 of the adjacent plate to the rear. A turn buckle 16 is arranged within the elevated-portion 5 of each bearing member and is pivotally connected at eac end with the corresponding pivot pin 10, whereby the effective'lengths of the bearing membersmay be readily adjusted to take up wear in the pivotal joints. Each pivot pin 10carries two rollers'1'7 arranged-on-oppo site sides oft-he turn buckle conne'ctions'and adapted to engage in notches 18in the periphery ofthe 'tractor wheels ,1'9 mounted upon shafts 20 of the vehicle, as indicated, and whereby the tractor construction for the is operatedin the V be readily understood. By this arrangement,"a' simple and effective I purpose isprovided,*in which ad-justmentsanay belreadilymadetotake up" wear incident to use, and whichwill I I noti'feadily clog-withmud orthe like. *YThe' simple and my-- invention into effect, thiszis capable I of variation and modification without depart-' precise details of construction set forth, but desire to vail myself of such variations and modifications as come within the scope of the appended claims.

Having described my invention, what I claim as new and desire to secure by Letters Patent is specific formeand; arrangement ofpa'rtsisa" effective one for the purpose; o I Y \Vhile I have illustrated and described'the' 1 preferred form of construction forc'arrying invention? I I 1. An endless track comprising a plurality of bearing members, each of said bearing members. being made of sheet metal and having a central elevated portion and depressed side portions; a transverse spur ex- I tending across one end of each of said bearing members; bearings formed at each end of each of said bearing members, the bearing at one end being adapted to engage a transverse pivot pin connection, and the bearing at the other end being adapted to engage the pivot pin bearing on the adjacent bearmg member; and an adjustable tie member connecting each pair of adjacent pins, substantially as described.

2. An endless track comprising a plurality of bearing members, each" of "said bearing 7 members being made of sheet metal and hav portion and depressed an endless track comprising bearing mem ing a central elevated side portlons; a transverse spur extending across oneend of each of said bearing members; bearings formed at-each endofeachvof said bearing members, the hearing at one end-being adapted to engage a transverse pivot pin connection, and the. bearing atzthe other endbeing adapted to en age the pivot pinbearing on the adjacent caring meme ber; and. an adjustable turn buckle: connecting each. pair of adjacent pins, substantially asdescribed. I h

3, An endlesstrack comprising a. plurality of bearing. members, .each of saidt bearingz.

members having a bearingat" each end there of,1the rbearing at one end being arranged to; a. transverse pivot. pin. connection,.

engage, and the-bearing. at the other end being. ar-

ranged to. engage said pivot. pin bearing; on.v the; adj acentfbearing member and adjustable:

tiem'embers. for connecting; adjacent: pins, substantially; as described.

4.3 Anendless track comprising a plurality or? bearin members, eachv made of. sheet. meta1 andfi ent-.,to form a central raised. pore tion anddepressed side portions, oneend ofeachiof saidibearing members beingiformed J into a transverse prong and" a bearing adapt,- I

ed toengagea transverse pivot pin, the other endofi each of said. bearing; members being.

provided with" abearing adapted to. engage the. pivot .pin. bearing. on the adj acent bear-' ing member, and turn buckles connecting adjacentvplns, substantially as: described.

5.1 An endless track comprisinga plurality v of. bearingmembers, each. of whichbein g.

formed: from? asingle, pieceof material;

prongs, integrally formed on. saidv members sides of the :saidtie Jnemberconnection, sub- 6-.-- Iha tractorWheel, the combination of bers'formed'imm a single piece ofmate-rial having a centralelevated portion and depressed side portions; a transverse spur extending across one end .of. each of said bear:-"-

ingg'members; bearings formed :ateachend of said bearingmembers, one.:of said-end: bearings; adapted to engage: a1 transverse; pivot pin. connection and the; othenof: said-:1 endbearingsadapted toengage: the pivotpinbearing. on the adjacent bearingmember'; amg adjustable turn buckle connecting eachipaira of'adjaoent.pins:; and rollers carried-by saidpivot pin adapted to. engage the -periphery; of. said. tractor: Wheel,',substantiallyg as de scribed. V 7 In a; tractor wheel; the. combinatiom oi i an endless track comprising,bearingmem+- bers aitransverse spur. extending; aorosse one end of .eachof said bearing members; bear ings formed. at: each end of said bearings...

members, one of said end. bearings adaptedato. en age a transverse p1vot pin-connection and-t e otherof said end bearings adapted: to engage: the pivot pin bearing, on the adja; :7 0

cent bearing member; an adjustabletie ber: connectingv each pair of adjacent pins; and rollers. carried by. said pins oil-opposite stantially as described.

In testimony whereof I have signedrim-yig nametothisspecification intherpresencezof V two subscribin witnesses. I Y F%lOYD-BUBSON SAPR.

\Vitnesses: 7 7 j S..E-. ZINK, V GUY: G. LANE,- 

